Lumite Bars can be made in the Forge from Lumite Ore. Lumite Ore itself is not usable its raw form for crafting; instead it has to be smelted to Lumite (Bars) by putting the Lumite Ore into a Forge together with some Fuel.

Lumite Ore can solely be extracted from Lumite Nodes that can be found embedded in other rocks all throughout the Corruption layer deep underground, on the deepest layer of all Creativerse worlds.

The Corruption layer is nearly never accessibly through Caves leading down from the surface or even from Stalactite layer caves, so you will usually need to dig mine shafts yourself downwards in order to find your first small batch of Lumite Nodes, which requires at least a Diamond Mining Cell or better to be equipped.

While Lumite Nodes can only rarely be found on the Lava layer on new game worlds, this is the case a lot more often on older game worlds.

There is no known way to create nor to transform Lumite Nodes. Rumors and videos claiming that Lumite Nodes can be created from Diamond Nodes via Corrupted Water have been the result of old hacks unknown to the owner of the affected game world and cannot be reproduced. The security hole that had made this possible should have been closed by now.

Lumite Nodes cannot be frozen, burnt nor transformed by cold or fire, they cannot be poisoned nor corrupted either. Different from Coal Nodes and Diamond Nodes, Lumite Nodes cannot be created by players.